Home schooling comes with it's challenges for many families. What if your child is having speech difficulties? When is it that cute lisp or "wabbit" no longer developmentally appropriate? What if it's your child's speech that is making learning to read and spell hard for them? Where do you go to find a qualified speech therapist in your area without enrolling your child in public school? Is it even affordable or will your insurance cover it?
The American Speech and Hearing website is great place to start looking for answers to most of these questions. http://www.asha.org/public/speech/development/ If you are still unsure and have more questions call a local speech therapist and pick their brain. (Find one in your area here: http://www.asha.org/findpro/).
Often times just a few months of speech therapy by a qualified speech language pathologist is all your child will need to set them on the right track. If this individualized therapy is accompanied by some parent training you might even be able to add speech therapy to your homeschool repertoire.
Best of luck and happy homeschooling!